Kestrel 3550FW User manual
www.kestrelinstruments.com
Kestrel 3550FW
Fire Weather Meter
User Guide
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CONTENTS
Out of the Box Instructions ...................................4
Compass Calibration...............................................5
Kestrel KDEX App Connectivity............................8
Connect to Your Mobile Device ............................9
Measurements .......................................................10
In the Field Instructions ....................................... 11
Using The App........................................................13
Setup & Options.....................................................16
Barometric Pressure & Altitude Adjustment....17
Measurement Notes .............................................19
Maintenance & Service Addendum ...................20
Sensor Drift & Calibration...................................21
Wind Vane Mode ...................................................22
CONTENTS
For instruction manuals for all Kestrel products, FAQs, technical
support, instructional videos and more, please visit:
www.kestrelinstruments.com/help
4 |
OUT OF THE BOX
OUT OF THE BOX
Turn the Kestrel 3550 On:
Press the center button to turn your Kestrel on.
Pressing and holding the center button will turn it o.
To conserve battery, the Kestrel will power o 45 minutes after the last button press
unless the Kestrel is connected to the Kestrel KDEX app.
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KESTREL KDEX APP
BLUETOOTH CONNECTIVITY
Download the Kestrel KDEX app:
Make sure to choose Kestrel KDEX app, NOT the Kestrel LiNK
Ballistics app. Kestrel KDEX app is the only app compatible
with the Kestrel 3550 unit.
KDEX APP
6 |
COMPASS CALIBRATION
Calibrate the Compass
Compass calibration is required before using your 3550. You can calibrate
the compass by following the steps outlined below or by using the
Compass Calibration feature in the KDEX app. The screen will display
"CAL" plus ashing degree and compass symbols on start up, indicating
the Kestrel is in calibration mode:
Hold the Kestrel vertical.
Press the center button to begin calibration.
Carefully spin the Kestrel at about 8 seconds
per rotation while the screen counts down
from 30 to 0.
Troubleshooting Tip: If the calibration fails and returns to the “CAL”
screen, simply press the center button and repeat the calibration.
COM PASS CALIBR AT ION
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COMPASS CALIBRATION
To ensure accuracy of readings,
you must calibrate the compass
each time the battery is changed or
removed. The screen will show “CAL”
plus the compass & degree symbols
on start up, indicating the Kestrel is
in calibration mode.
When calibrated, the display will
change to show the compass direction
screen.
The 3550 display will always show the
magnetic heading.
To initiate a new calibration, remove
the battery for 3 seconds and
then replace it or use the Compass
Calibration feature available in the app.
COM PASS CALIBR AT ION
8 |
The Kestrel KDEX App can be changed
to display TRUE or MAGNETIC heading.
The Kestrel KDEX app can be used to
initiate compass calibration via the
device settings view.
COMPASS CALIBRATION
COM PASS CALIBR AT ION
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CONNECT TO YOUR MOBILE DEVICE
CONNECT
Connect your Kestrel 3550 to your
phone or tablet:
With your Kestrel unit turned on, open the
app and follow the app instructions and
prompts to connect your Kestrel.
Certain permissions are required. User
must select “Allow” on the app.
After scanning and connecting to your
device, the “Realtime” measurements
screen will display the current readings
from the Kestrel. Readings are updated
at the frequency of the Sync Rate shown
in the upper right corner of the Realtime
screen. Use the buttons on the bottom
navigation bar to explore other app
features.
Troubleshooting: Make sure Bluetooth® is
turned on in your mobile device. Do not try to
connect the Kestrel using the Bluetooth menu
in your mobile device settings, but use the
“Connect” function on the “Devices” view in the
app instead.
10 | MEASUREMENTS
MEASUREMENTS
Only one arrow icon will be displayed on screen to indicate the 3-hour pressure trend.
The table below shows all Measurement screens available with their corresponding
screen icon and“Hint” abbreviation.
Measurement Icon Hint Units of Measure 3550FW
Wind Speed SPd mph |kt |B |m/s |ft/min |km/h •
Temperature dEG ˚F |˚C •
Wind Direction dir ˚ •
Wind Chill chil ˚F |˚C •
Relative Humidity % r.h. % •
Heat Stress Index % H.I ˚F |˚C •
Dewpoint Temp d . P. ˚F |˚C •
Barometric Pressure bAro inHg |hPA |mb •
Altitude Alt m |ft •
Wet Bulb Temp bulb ˚F |˚C •
Pressure Trend •
Backlit Display •
Clock •
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